Gradian to Radian Converter
Convert gradian to radian instantly.
Standard angle units
degree 90
radian 1.571
arcminute 5400
arcsecond 324000
turn 0.25
Fun comparisons
clock hour marks 🕐~ 3
pizza slices (1/8) 🍕~ 2
right angles 📐~ 1
compass quarter turns 🧭~ 1
How to convert gradian to radian
Enter your angle in gradian and get the equivalent in radian instantly. Key reference points: a full circle is 360 degrees (2π radians / 400 gradians / 1 turn), and a right angle is 90 degrees (π/2 radians).
Gradians are used in European surveying and civil engineering, while radians are the SI standard for mathematics and physics.
Need the opposite direction? Convert radian to gradian just as easily, or explore all our angle conversions.
Common gradian to radian conversions
| Gradian (gon) | Radian (rad) |
|---|---|
| 1 | 0.015708 |
| 5 | 0.0785398 |
| 10 | 0.15708 |
| 25 | 0.392699 |
| 50 | 0.785398 |
| 100 | 1.5708 |
| 500 | 7.85398 |
| 1000 | 15.708 |
Frequently asked questions
1 gradian equals 0.015708 radian.
Multiply by 0.015708. For example, 5 gon = 0.0785398 rad.
100 gradians equals π/2 radians (approximately 1.5708 radians).
1 radian equals 63.662 gradian.
100 gradian equals 1.5708 radian.